• Array: An array in Java is a container object that holds a fixed number of values of the same data type. It allows you to store multiple items, such as integers, strings, or objects, in a single variable instead of creating separate variables for each value.
• Fixed Size: Once an array is created, its size cannot be changed. This means that you must define the number of elements it will hold at the time of creation.
• Zero-based Indexing: Array indices start at 0, meaning the first element is accessed with index 0, the second with index 1, and so on.

1. .Declaration: To declare an array, specify the data type followed by square brackets. For example:```javaint[] numbers; // Preferred wayString[] names; // Preferred way```Alternatively, you can use:```javaint numbers[]; // Works but not preferred```
2. Initialization: You can initialize an array at the time of declaration or later. For example:```javaint[] numbers = new int; // .Creates an array of 5 integersString[] names = {"Alice", "Bob", "Charlie"}; // Initializes with values```

• You can access elements of an array using their index. For example:```javaint firstNumber = numbers[^^0^^]; // Accesses the first elementnames.= "David"; // Changes the second element to "David"```

• One-dimensional Arrays: These are the simplest form of arrays, where elements are stored in a single line.
• Multi-dimensional Arrays: These arrays can hold data in a table-like structure, such as a 2D array (matrix). For example:```javaint[][] matrix = new int; // .3x3 matrix```

Arrays are a fundamental part of Java programming, providing a way to manage collections of data efficiently. Understanding how to declare, initialize, and manipulate arrays is essential for effective Java development. For more detailed examples and operations, you can refer to resources like GeeksforGeeks and W3Schools.